Automatic feeder for steam-boilers.



No. 646,083 Patented Mar. 27, 1900. E. J. STRONG.

AUTOMATIC FEEDER FOR STEAM BOILERS.

(Application filed Apr. 8, 1899.)

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EDWIN J. STRONG, or PLOVER, IOWA.

AUTOMATIC FEEDER FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 646,083, dated March 27, 1900.

T0 ctZZ whom it may concern.-

Be it known that I, EDWIN J. STRONG, a citizen of the United States,residing at Plover, in the county of Pocahontas and State of Iowa, have invented a new and useful Automatic Feeder for Steam-Boilers, of which the following is a specification.

The object of my invention is to provide an automatic feeder for steam-boilers which will carry Water into a steam-boiler when the water in the boiler is under steam-pressure and keep the water near a certain predetermined height in the boiler without the aid or attention of an engineer or attendant.

In the drawings, Figure 1 is a sectional view of the feeder connected with the steamspace of a boiler E by a steam-pipe t and with the water-space of the boiler E by. a water-pipe T and connected with the source of water-supply W by the inlet-pipe T, and Fig. 2 a top view of the perforated or leaking valve 0 In Fig. 1 the cylindrical receptacle or steamchamberA is connected with the steam-space of a boiler E by a steam-pipe t, which extends upward into the cylinder A and is provided with a valve c pivotally attached to a lever B suspended by its fulcrum s and to the opposite end of said lever 13 is pivotally attached a float F in a cage 0 The waterspace of the boiler E is connected with the cylinder A by the water-pipe T having a perforated or leaking valve o (top view shown in detail, Fig. 2,) which allows water to flow from cylinder A into the boiler E through the pipe T, but prevents it from flowing in the opposite direction except in a small stream. Said valve '0 having a leakhole 0, is pivotally attached to a lever B which is supported upon its fulcrum s and to the opposite end of the lever B is pivotally attached a float'F in a cage 0 The source of water-supply or tank W is connected with the cylinder A by a waterinlet pipe T, provided with a valve '0 upon a float F in acage 0 The interior of cylinder A and water-inlet pipe T are also connected by a steam-pipe 0a, which is provided with a valve 0' upon a lever Z, which is pivotally attached to cylinder A at j, and to its opposite end is pivotally attached a weighted float F in a cage 0. v

Application fi16dAP1l18j1399. smart. 712,341. (Nomodeld K is a cap-screw on top of inlet-pipe T. The operation consists in having the boiler E filled with water to above the open end of the steam-pipe t in the boiler E and the en- .in cylinder A is free to flow downward by gravity and seek its level in the boiler E.

When nearly all the water in cylinder A is exchanged for steam, the weighted float F pulls down on the long end of lever Z, and thereby opens'steam-pipe ac, which gives vent to the steam in cylinder A, which causes a sudden draft of steam and water up through steam-pipe t and water-pipe T which instantly shuts their valves 12 and c and as steam continues to pass through steam-pipe 0a the steam-pressure upward is relieved from valve 12 which drops open, and the water in the inlet-pipe T, between valve 12 and steamvpipe 0c, flows down through cage 0 and commingles with steam in cylinder A, which suddenly condenses, forming a vacuum in cylin der A and in the inlet-pipe T, which soon entirely fills with water from the source of water-supply WV. When cylinder A fills with water, the float F brings valve 2; up and closes steam-pipe 0c, and float F brings valve 0 up and closes the inlet-pipe T. Then as water gradually leaks up through the perforated valve 42 the boiler-pressure upward against valve 11 and valve '0 is permitted to pass up through into cylinder A, and thereby relieve valve 'u and valve '8 from steampressure upward, and consequently open steam-pipe t and water-pipe T Now cylinder A is again filled with water, and its pipes which communicate with the interior of the boiler E are open, and cylinder A is again readyto give the boiler E water in exchange for steam until the open end of steam-pipe t in the boiler E is flooded with water, which stops its operation until the water again boils down.

What I claim as new, and desire to secure by Letters Patent, is-

1. In an automatic feeder for steam-boilers, the combination with the chamber A, the boiler E and a source of Water-supply W of the steam-pipe t connecting the steam-space in said boiler E with said chamber Aand extending vertically to near the upper end of said chamber A; the water-pipe T connecting the lower end of said chamber A with the lower portion of said boiler E; the fulcrum 3 depending from the lower face of the upper head of said chamber A; the lever B pivoted in said fulcrum s and provided with a rod having a valve r adapted to work in the enlarged upper end of said steam-pipe t; the lever Z provided with a valve v for opening and closing the steam-pipe a: communicating with the inlet-pipe 'I"; the cage 0 rising from the bottom of said chamber A; the weighted float F connected with said lever Z and adapted to work in said cage 0; the lever B supported on the fulcrum s; the perforated valve 0 located in the upper end of the water-pipe 'I and pivotally connected by a valve-rod with said lever B the cage 0 connected with the head of said chamber A directly below the inlet-pipe T, and the float F provided with valve 12 located in said cage 0 substantially as specified.

2. In an automatic feeder for steam-boilers, a water-chamber A, a water-inlet pipe with a space of the boiler to the chamber A and the steam-pipe o0 connecting the upper part of the chamber with the water-inlet pipe, a valve for each of these pipes the valve e in pipe T having a leak-opening 0 whereby the water is permitted to leak backward from the boiler into chamber A for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

EDWVIN J. STRONG.

Vitnesses:

S. S. APPLEBY, \V. J. HOGAN. 

